1bd669475SArd Biesheuvel 2bd669475SArd Biesheuvel #ifndef _DRIVERS_FIRMWARE_EFI_EFISTUB_H 3bd669475SArd Biesheuvel #define _DRIVERS_FIRMWARE_EFI_EFISTUB_H 4bd669475SArd Biesheuvel 5bd669475SArd Biesheuvel /* error code which can't be mistaken for valid address */ 6bd669475SArd Biesheuvel #define EFI_ERROR (~0UL) 7bd669475SArd Biesheuvel 807e83dbbSArd Biesheuvel /* 907e83dbbSArd Biesheuvel * __init annotations should not be used in the EFI stub, since the code is 1007e83dbbSArd Biesheuvel * either included in the decompressor (x86, ARM) where they have no effect, 1107e83dbbSArd Biesheuvel * or the whole stub is __init annotated at the section level (arm64), by 1207e83dbbSArd Biesheuvel * renaming the sections, in which case the __init annotation will be 1307e83dbbSArd Biesheuvel * redundant, and will result in section names like .init.init.text, and our 1407e83dbbSArd Biesheuvel * linker script does not expect that. 1507e83dbbSArd Biesheuvel */ 1607e83dbbSArd Biesheuvel #undef __init 1707e83dbbSArd Biesheuvel 18a6a14469SArd Biesheuvel /* 19a6a14469SArd Biesheuvel * Allow the platform to override the allocation granularity: this allows 20a6a14469SArd Biesheuvel * systems that have the capability to run with a larger page size to deal 21a6a14469SArd Biesheuvel * with the allocations for initrd and fdt more efficiently. 22a6a14469SArd Biesheuvel */ 23a6a14469SArd Biesheuvel #ifndef EFI_ALLOC_ALIGN 24a6a14469SArd Biesheuvel #define EFI_ALLOC_ALIGN EFI_PAGE_SIZE 25a6a14469SArd Biesheuvel #endif 26a6a14469SArd Biesheuvel 2760f38de7SArd Biesheuvel extern int __pure nokaslr(void); 28*eeff7d63SArd Biesheuvel extern int __pure is_quiet(void); 29*eeff7d63SArd Biesheuvel 30*eeff7d63SArd Biesheuvel #define pr_efi(sys_table, msg) do { \ 31*eeff7d63SArd Biesheuvel if (!is_quiet()) efi_printk(sys_table, "EFI stub: "msg); \ 32*eeff7d63SArd Biesheuvel } while (0) 33*eeff7d63SArd Biesheuvel 34*eeff7d63SArd Biesheuvel #define pr_efi_err(sys_table, msg) efi_printk(sys_table, "EFI stub: ERROR: "msg) 3560f38de7SArd Biesheuvel 36bd669475SArd Biesheuvel void efi_char16_printk(efi_system_table_t *, efi_char16_t *); 37bd669475SArd Biesheuvel 38bd669475SArd Biesheuvel efi_status_t efi_open_volume(efi_system_table_t *sys_table_arg, void *__image, 39bd669475SArd Biesheuvel void **__fh); 40bd669475SArd Biesheuvel 41bd669475SArd Biesheuvel unsigned long get_dram_base(efi_system_table_t *sys_table_arg); 42bd669475SArd Biesheuvel 43bd669475SArd Biesheuvel efi_status_t allocate_new_fdt_and_exit_boot(efi_system_table_t *sys_table, 44bd669475SArd Biesheuvel void *handle, 45bd669475SArd Biesheuvel unsigned long *new_fdt_addr, 46bd669475SArd Biesheuvel unsigned long max_addr, 47bd669475SArd Biesheuvel u64 initrd_addr, u64 initrd_size, 48bd669475SArd Biesheuvel char *cmdline_ptr, 49bd669475SArd Biesheuvel unsigned long fdt_addr, 50bd669475SArd Biesheuvel unsigned long fdt_size); 51bd669475SArd Biesheuvel 52a643375fSArd Biesheuvel void *get_fdt(efi_system_table_t *sys_table, unsigned long *fdt_size); 53bd669475SArd Biesheuvel 54f3cdfd23SArd Biesheuvel void efi_get_virtmap(efi_memory_desc_t *memory_map, unsigned long map_size, 55f3cdfd23SArd Biesheuvel unsigned long desc_size, efi_memory_desc_t *runtime_map, 56f3cdfd23SArd Biesheuvel int *count); 57f3cdfd23SArd Biesheuvel 58e4fbf476SArd Biesheuvel efi_status_t efi_get_random_bytes(efi_system_table_t *sys_table, 59e4fbf476SArd Biesheuvel unsigned long size, u8 *out); 60e4fbf476SArd Biesheuvel 612ddbfc81SArd Biesheuvel efi_status_t efi_random_alloc(efi_system_table_t *sys_table_arg, 622ddbfc81SArd Biesheuvel unsigned long size, unsigned long align, 632ddbfc81SArd Biesheuvel unsigned long *addr, unsigned long random_seed); 642ddbfc81SArd Biesheuvel 65b9d6769bSArd Biesheuvel efi_status_t check_platform_features(efi_system_table_t *sys_table_arg); 66b9d6769bSArd Biesheuvel 67568bc4e8SArd Biesheuvel efi_status_t efi_random_get_seed(efi_system_table_t *sys_table_arg); 68568bc4e8SArd Biesheuvel 69bd669475SArd Biesheuvel #endif 70